tree 32ef20cfcc8789d43f10907fb738dce7e4c23bcd
parent 35eaa0ee4e69cc17166e10c0c17506d050a3e60d
author Hans Verkuil <hverkuil@xs4all.nl> 1539169935 -0400
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1544688969 +0100

media: cec: check for non-OK/NACK conditions while claiming a LA

[ Upstream commit 55623b4169056d7bb493d1c6f715991f8db67302 ]

During the configuration phase of a CEC adapter it is trying to claim a
free logical address by polling.

However, the code doesn't check if there were errors other than OK or NACK,
those are just treated as if the poll was NACKed.

Instead check for such errors and retry the poll. And if the problem persists
then don't claim this LA since there is something weird going on.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>